JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>

    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>

    <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/d3/2.10.0/d3.v2.min.js"></script>

    <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>

    <style>
        #map {
            width: 500px;
            height: 500px;
        }
        
        .SvgOverlay {
        }
        
        .SvgOverlay, .SvgOverlay svg {
            position: absolute;
            top: -250px;
            left: -250px;
            padding: 500px;            
        }
        
        .SvgOverlay path {
            stroke: Orange;
            stroke-width: 2px;
            fill: Orange;
            fill-opacity: .3;
        }
    </style>
</head>
<body>
    <div id="map">
    </div>

    <script>

        $(function () {

            var $map=$("#map");
            var map = new google.maps.Map($map[0], {
                    zoom: 6,
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    center: new google.maps.LatLng(-18.2, 35.1), // Mozambique
                    styles:[{"stylers": [{"saturation": -75},{"lightness": 75}]}]                    
                });

            var geoJson = provinces();
            var overlay = new google.maps.OverlayView();

            overlay.onAdd = function () {

                var layer = d3.select(this.getPanes().overlayLayer).append("div").attr("class", "SvgOverlay");
                var svg = layer.append("svg")
                    .attr("width", 1000)
                    .attr("height", 1000)
                var adminDivisions = svg.append("g").attr("class", "AdminDivisions");

                overlay.draw = function () {
                    var markerOverlay = this;
                    var overlayProjection = markerOverlay.getProjection();

                    // Turn the overlay projection into a d3...